空心结构ZnSn(OH)6立方体制备及其可见光催化性能研究

Preparation of ZnSn(OH)6 Cubes with Hollow Structure and Their Visible Light Photocatalytic Properties

摘要:

以乙酸锌、锡酸钠、氟化铵为原料,利用NH₄F刻蚀,采用水热法制备了尺寸250nm的空心结构的ZnSn(OH)₆立方体,通过X射线衍射(XRD)、红外光谱(FTIR)、拉曼光谱(Raman)、扫描电镜(SEM)、透射电镜(TEM)、荧光光谱(PL)等来表征ZnSn(OH)₆的晶体结构、形貌和光学性能,通过降解亚甲基蓝(MB)来探索不同水热时间制备的ZnSn(OH)₆的光催化性能。研究发现,水热2h制备的ZnSn(OH)₆具有完整的空心结构,对甲基蓝(MB)在可见光下降解效率为150 min降解97.4 %。说明空心ZnSn(OH)₆立方体光催化材料是一种具有前景的可见光催化降解材料。

Abstract:

ZnSn(OH)₆ cubes with the hollow structure of 250 nm in size were prepared by hydrothermal method with zinc acetate , Na₂SnO₃ and ammonium fluoride as raw materials using NH₄F etching. The crystal structure, morphology, and optical properties of ZnS(OH)₆ were characterized by X-ray diffraction (XRD), infrared spectroscopy (FTIR), Raman spectroscopy (Raman), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Photoluminescence (PL). The photocatalytic properties of ZnSn(OH)₆ prepared at different hydrothermal reaction duration were investigated by degrading methylene blue (MB). It was found that ZnSn(OH)₆ prepared by hydrothermal treatment for 2 h had a complete hollow structure, and its degradation efficiency of methyl blue (MB) was 97.4 % in 150 min under visible light. The hollow ZnSn(OH)₆ cubic photocatalytic material is a promising photocatalytic material for visible light degradation.